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Finding the Fourth Proportional to 210,520.71, 315,802.32 and 68,360.04

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Solution

The fourth proportional to 210,520.71, 315,802.32 and 68,360.04 is: 102,546.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,520.71 : 315,802.32 = 68,360.04 : x
  2. Step 2: Convert to fraction form
    210,520.71/315,802.32 = 68,360.04/x
  3. Step 3: Cross multiply
    210,520.71x = 315,802.32 × 68,360.04
  4. Step 4: Simplify right side
    210,520.71x = 21,588,259,227.29
  5. Step 5: Solve for x
    x = 21,588,259,227.29/210,520.71
  6. Step 6: Final answer
    x = 102,546.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.